Add compat module for AIX with implementaions of opentpy / forkpty #4828

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dalvescb wants to merge 1 commit into rust-lang:main from dalvescb:aix-pty-compat

dalvescb commented Nov 14, 2025

Description

AIX is missing certain native pty functionality (mainly forkpty and openpty) so we need to add custom rustified implementations for compatibility (same as solarish src/unix/solarish/compat.rs). The implementation was roughly based off the implementation in freebsd source https://github.com/freebsd/freebsd-src/blob/82d8a5029a80a77166dca098b8fedb10d84e4e38/lib/libutil/pty.c#L88 , so we need to include the relevant copyright at the top of the compat.rs file

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Checklist

Relevant tests in libc-test/semver have been updated
[ X] No placeholder or unstable values like *LAST or *MAX are
included (see #3131)
[ X] Tested locally (cd libc-test && cargo test --target mytarget);
especially relevant for platforms that may not be checked in CI


          add compat module for AIX with implementaions of opentpy / forkpty

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